OABC is a parallelogram.
OA = a and OC = c
X is the midpoint of the line AC.
OCD is a straight line so that OC : OD = k : 1
XD = 4c - [tex]\frac{1}{2}[/tex] a
a) Find OX in terms of a and c, OX = (Answer here) (1)
b) CD = CX + (Answer here) (1)
c) Work out the value of k. k = (Answer here) (2)
![OABC is a parallelogram. OA = a and OC = c X is the midpoint of the line AC. OCD is a straight line so that OC : OD = k : 1 XD = 4c - [tex]\frac{1}{2}[/tex] a a class=](https://us-static.z-dn.net/files/dde/bc1dffa56bb33e2f39a61a5753b6b789.png)